First I want to say that I have some Bitcoin and I want to see it go to the moon. But I have some questions regarding the reasons that people give as to why Bitcoin is a good investment.

Reason 1: You are in control of your own money - government overprint cash which devalues the dollar, but big influential people and institutions can devalue Bitcoin with a single tweet. Bad news, issues with mining, and other things out of your control can devalue Bitcoin.
Well at least the inflation is controlled. The decline in value due to FUD is impermanent losses as long as you didnn't sell you Bitcoin at a lost you don't lost any while cash has everlasting value devaluation due to unlimited inflation.
Reason 2: Nobody can take away your bitcoin whereas the bank can confiscate your cash and lock your account - should I worry about my bank doing this if I am not doing anything that is illegal?
True that, even if you are not doing any illegal means as long as the bank misunderstood your means of producing wealth, they will lock it until you have proven them you are wrong that would take time.
Reason 3: You can send it to anyone in the world - why would people want Bitcoin when you cannot use it to purchase in many stores? Plus ii takes too long for 1 transaction to go through.
Please correct me if I am misinformed.

The thing here is that you can send it to anyone in the world without any third party mediation, as of the time confirmation, developers are working on it so I believe in due time Bitcoin will have an instant transaction and way faster confirmation.